Vessel with double walls and protective case.



No. 884,582. PATENTED APR.14, 1908.

H. HENN.

VESSEL WITH DOUBLE WALLS AND PROTECTIVE CASE.

APPLICATION FILED 001218, 1907.

it; y 6- 61 1 Wtfizesses: j ww/iaw W W W UNITED s'rA'rps RATENT OFFICE.

HUBERT HENN, OF BERLIN, GERMANY, ASSIGNOR, BY MESNE ASSIGNMENTS, TO AMERICAN THERMOS BOTTLE COMPANY, OF BROOKLYN, NEW YORK, CORPORATION OF MAINE.

VESSEL WITH DOUBLE WALLS ANED PROTECTIVE CASE.

Specification of LettersPatent.

Patented April 14, 1908.

Application filed October is, 1997. semi No. 398,049.

' Walls and Protective Case, of which the and clea following is a full, clear, and exact specification.

The present invention relates to vessels with double walls which inclose in a well known manner a s ace in which a vacuum exists. Such vesse s have hitherto been fastened ina protective'jacket of an .material in a suitable manner, for exam le y fastening the neck of the vessel with p aster of paris in the upper part of the protective jacket. As the protective jacket in itself is likewise rigid, it is very difficult to introduce a new double walled vessel into the protective ficket if the former is destroyed by accident.

oreover, the mode of fastening the vessel by securing it with plaster of paris or the like ashitherto adopted does not by anymeans satisfy re uirements with regard to security ess. It has not been ossible to remove the liquid in a clean .an simple manner at the joint or the mouth of the vessel; Also it has not been in any way possible to exchange the vessels easily when cleaning the vessels or when a breakage has occure By means of the present invention the vessels can be easily exchanged by the vessels being screwed into the upper members of the protective jackets by means of. screw threads on their necks or in the neighborhood of their mouths. j

A practical embodiment ofmy invention is illustrated in the accompan ing drawings which represent the bottle, j ac et and-clip in vertical central section;

On the double-walled vessel which consists of two walls a, b, inclosing the space in.

which a vacuum exists, there is fastened a collar 0 on the upper part of the outer wall b, said collar being. provided with a screwthread. .This threaded collar 0- which is fastened by fplaster of paris or the like below the e e o the mouth of the bottle, is

'screwe into the upper member d of the protective jacket for the bottle. On the upper member (1, a body member 6 is screwed, said body member serving as the protective jacket proper for the vessel and at the same time serving to close the same. member cl is provided with another screwthread which serves for screwing on the protective .cup f. After screwing off said cup from the upper member and removing the cork g, the edge and outlet of the vessel are perfectly free so that on pouring out the What I'claim is:

1. The combination with a jacket composed of separable members, of a cup and a vacuum insulated bottle, both removably'sc cured to one of said jacket members.

2. The combination with a jacket having an upper member and a body member having a screw threaded engagement-therewith, of a vacuum insulated bottle also having a screwthreaded engagement with said upper jacket member.

3. The combination with a jacket having an upper member and a body member having a screw-threaded engagement therewith, G1 a cup and a vacuum insulated bottle, both having screw-threaded engagements with said u per jacket member.

4. he combination with a jacket having an upper member and a body member having a screw-threaded engagement therewith, of a vacuum insulated bottle having a collar at its neck provided with a screw-threaded The upper portion'arranged to engage the upper jacket member.

bottle, a cup and a jacket comprising an upper member and a body member removab v 5. In combination, a vacuum insulated secured thereto, said upper member having a screw-threaded portion, the .inner wall f which is arranged to be engaged by the vacuum insulated bottle and the outer wall of whichis arranged to be engaged by the cup.

Dated this 3d day of October, 1907. In witness whereof I have hereunto set m hand in presence of two witnesses. A

HUBERT HEN N.

Witnesses:

WOLDEMAR HAUPT, HENRY HASPER. 

